CSI needs some aces to solve its next case. On Wednesday's episode (10/9c, CBS), the team investigates the murder of a tennis player, which leads to Finn (Elisabeth Shue) questioning 18-time Grand Slam champion Chris Evert.Winter TV: Get the scoop on your favorite returning showsBut this isn't your average interrogation. Interrupting Evert's hitting session, Finn picks up a racquet and quizzes the tennis legend during a rally.Check out her skills in our exclusive sneak peek below.The episode, which also features former tennis stars Lindsay Davenport and Justin Gimelstob guest-starring as themselves, airs Wednesday at 10/9c on CBS.